2026 Lexus RZ 450e AWD (20 inch wheels - 235/50R20): home charging cost in Iowa

At Iowa's residential electricity rate of 13.77¢/kWh, a 2026 Lexus RZ 450e AWD (20 inch wheels - 235/50R20) (rated 31.2 kWh per 100 miles by the EPA) costs $4.29 to drive 100 miles on home charging, against $16.02 for the same distance in a car averaging 25.5 mpg on gasoline at $4.085/gallon. Charging at home costs a fraction of what gas would here: 73.2% less than gas per mile, here specifically.

What a year of driving costs

Driving 15,000 miles a year — fueleconomy.gov's own default assumption — a 2026 Lexus RZ 450e AWD (20 inch wheels - 235/50R20) charged at home in Iowa costs about $644/year in electricity, against about $2,403/year for the gas-car comparison. That's a savings of about $1,759 a year.

What one full charge costs

A 2026 Lexus RZ 450e AWD (20 inch wheels - 235/50R20) needs roughly 80.1 kWh to reach its EPA-rated 257-mile range, which runs about $11.03 at 13.77¢/kWh in Iowa.

How this compares nationally

This combination ranks 1,692 of 20,400 state/model pairs for cost savings against gas (1 is cheapest). The Lexus RZ 450e AWD (20 inch wheels - 235/50R20) alone ranks 78 of 400 models for efficiency; Iowa alone ranks 9 of 51 states for electricity price.

Next step: home charger installation

The numbers above assume Level 2 home charging is already in place — the electrical work behind that is a real, separate cost that varies by panel, wiring, and local labor rates, not something this page's per-mile math includes.

Line up a few Iowa electrician quotes for Level 2 install before you commit either way.

Where these figures come from

Every figure on this page traces to a named EIA or EPA dataset — see the methodology guide. At 13.77¢/kWh, Iowa sits in the middle of the national range — the guide to why charging cost varies by state shows where.